Model: 2N491A-HR

Transistor

Special Features:

Weapon system essential; junction pattern arrangement: pn

Properties:

Inclosure Material
Metal
Overall Length
0.260 inches
Terminal Length
1.500 inches
Overall Diameter
0.370 inches
End Application
E-2c hawkeye aircraft
Internal Configuration
Unijunction
Mounting Method
Terminal
Terminal Circle Diameter
0.200 inches
Features Provided
Hermetically sealed case
Criticality Code Justification
Feat
Semiconductor Material
Silicon
Voltage Rating In Volts Per Characteristic
60.0 base to emitter voltage, dc
Current Rating Per Characteristic
70.00 milliamperes repetitive peak forward current megahertz
Power Rating Per Characteristic
600.0 milliwatts small-signal input power, common-collector preset
Maximum Operating Tempurature Per Measurement Point
175.0 degrees celsius junction
Precious Material And Location
Terminal surfaces gold
Test Data Document
81349-mil-s-19500/75 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Terminal Type And Quantity
3 uninsulated wire lead
Specification Data
99971-7531472 manufacturers specification control
NSN
5961-00-325-8567
Part Number
2N491A-HR
Description
Transistor
CAGE
3XFH2

An active semiconductor device with three or more electrodes. May or may not include mounting hardware and/or heatsink. Excludes semiconductor device, diode and semiconductor device, thyristor. For solid state devices which are responsive to visible or infrared radiant energy, see semiconductor device, photo.

Part 2N491A-HR NSN 5961-00-325-8567

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
20588
FIIG:
A110A0
Concept No.:
App. Key:
D
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
G
ESD:
ESD:
MMAC:
CRITL:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063025
UFC:
34525
LTL:
RATING VARIABLE
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8541500080
  • SITC: 77639
  • End Use: Semiconductors
  • NAICS: 334413
  • USDA: 1

Freight Class: Semiconductor devices, nesoi

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